Possible warnings (18)

<stdin>:1338:2: warning: #warning syscall open_tree not implemented [-Wcpp]
<stdin>:1341:2: warning: #warning syscall move_mount not implemented [-Wcpp]
<stdin>:1344:2: warning: #warning syscall fsopen not implemented [-Wcpp]
<stdin>:1347:2: warning: #warning syscall fsconfig not implemented [-Wcpp]
<stdin>:1350:2: warning: #warning syscall fsmount not implemented [-Wcpp]
<stdin>:1353:2: warning: #warning syscall fspick not implemented [-Wcpp]
<stdin>:1356:2: warning: #warning syscall fsinfo not implemented [-Wcpp]
kernel/printk/printk.c:186:16: warning: 'old' may be used uninitialized in this function [-Wuninitialized]
kernel/rcu/srcutree.c:148:32: warning: 'levelspread[<U2aa0>]' may be used uninitialized in this function [-Wuninitialized]
drivers/base/regmap/regmap.c:2497:6: warning: 'ret' may be used uninitialized in this function [-Wuninitialized]
drivers/base/regmap/regmap.c:1819:6: warning: 'ret' may be used uninitialized in this function [-Wuninitialized]
include/linux/list.h:65:12: warning: 'pdeo' may be used uninitialized in this function [-Wuninitialized]
fs/udf/unicode.c:132:8: warning: 'c' may be used uninitialized in this function [-Wuninitialized]
drivers/i2c/i2c-core-base.c:235:5: warning: 'ret' may be used uninitialized in this function [-Wuninitialized]
mm/hugetlb.c:1433:5: warning: 'page' may be used uninitialized in this function [-Wuninitialized]
drivers/tty/serial/8250/8250_core.c:251:18: warning: 'i' may be used uninitialized in this function [-Wuninitialized]
drivers/net/tun.c:1836:30: warning: 'copylen' may be used uninitialized in this function [-Wuninitialized]
drivers/net/tun.c:1746:46: warning: 'linear' may be used uninitialized in this function [-Wuninitialized]